Neil deGrasse Tyson
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neildegrassetyson.com
Neil deGrasse Tyson
@neildegrassetyson.com
Astrophysicist
Notice to flat-Earthers in Earth's Eastern Hemisphere witnessing a Total Lunar Eclipse right now

Once again, please alert the authorities if your eclipse tonight looks like this:
September 7, 2025 at 5:51 PM
Dear Everyone in the Earth’s Eastern Hemisphere:

If you can see the Moon at all, you are witnessing a total lunar eclipse over the next few hours. The Full Moon is passing into and out of Earth’s conical shadow in space. This event is long and boring and resembles the Moon going through phases.
September 7, 2025 at 5:50 PM
August 22, 2025; 4:00pm ET

The Stock Market (DJIA) closed at a record high today for the first time in eight months.

FYI: The long-term average for it to do that is sixteen times per year.
August 22, 2025 at 8:07 PM
July 4, 1776: Wondering whether the USA is the only country to celebrate its independence on the anniversary of simply declaring it, rather than on the anniversary of winning it. In our case, the British surrender at Yorktown, Virginia: October 19, 1781.

If so, that’s badass.
July 4, 2025 at 4:43 PM
Every machine in a Hospital that diagnoses your body without cutting you open is based on a principle of Physics, discovered by a Physicist who had no interest in Medicine.

If you think the world doesn’t need Basic Science, or that somehow Science has failed you, think again.
June 17, 2025 at 11:22 AM
What we value in CIVILIZATION: Agriculture, Architecture, the Arts, Transportation, Communication, Health, Wealth, Security.

All pivot on enlightened investments in Science, Technology, Engineering, the Arts, & Mathematics. "STEAM".

Without them, we descend into the Dark Ages.
June 11, 2025 at 3:09 AM
My life’s wisdom. Inspired by & dedicated to the memory of my father, Cyril DeGrasse Tyson - Civil Rights era sociologist.

It's what conflicts & disagreements among us look like when you’re scientifically literate — sprinkled with a dose of Cosmic Perspective.

neildegrassetyson.com/books/2022-0...
May 28, 2025 at 6:48 PM
Memorial Day 2025

Freedom isn’t free.
May 26, 2025 at 1:10 PM
Unfamiliar with the role of science in America’s national defense, or the history of science innovation in the defense of sovereign nations? I invite you to start with, Accessory to War: The Unspoken Alliance Between Astrophysics & the Military.
neildegrassetyson.com/books/2018-09-accessory-to-war/
May 20, 2025 at 8:47 PM
Not that anyone asked, but during my tenure on the Pentagon’s Defense Innovation Board, under part of Obama-2 and all of Trump-1, we visited Military Bases domestically & abroad.

At no time did any member of the Armed Forces I met say to me: “America needs less science funding.”
May 20, 2025 at 12:54 PM
If a foreign adversary snuck into our Federal budget and cut science research and education the way we’re cutting it ourselves — strategically undermining America’s long-term health, wealth, and security — we would likely consider it an act of war.
May 19, 2025 at 7:36 PM
Dear Republicans,

Cutting science budgets has not historically been a Republican thing. For example, Lincoln created the National Academy of Sciences. Eisenhower's term increased the science budget 366%. Gerald Ford, +15%; George H. W. Bush, +30%; George W. Bush, +54%.

Just sayin’.
May 19, 2025 at 12:10 PM
If Rational Arguments no longer work in US governance, it’s evidence of a deeper problem in our educational system, which favors what to know over how to think — how to critically analyze, process, & verify information.

Seems like a bad time to reduce funding for Public Education.
May 16, 2025 at 12:47 AM
When Students cheat on Exams — using AI or by any other means — they do so because School Systems value Grades more than Students value Learning.
May 12, 2025 at 12:30 PM
Don’t actually own a NASA Mars prototype ATV, but if I did, that's where I would park it on Broadway. And that’s how I would lean on it.
May 9, 2025 at 7:17 PM
Been thinking a lot lately about the morals of Jesus of Nazareth. Wondering what his rifle of choice would be if he moved to America. An AR-15 or an AK-47?
May 9, 2025 at 12:29 PM
Not that anybody asked, but my wife, growing up in Alaska, was on her school’s rifle team, and a student member of the NRA. Though she hadn’t fired a gun in 47 years, she didn’t lose her touch recently at a Las Vegas shooting range.

[ CZ Shadow 2 “Black & Blue” at 21 ft ]
May 8, 2025 at 3:21 PM
At NASA’s Goddard Institute for Space Studies, Manhattan, they specialize in planetary climates — especially Earth's.

The White House decided not to renew their building lease — where they’ve been for 64 years.

NASA’s total funding is 0.3% of the Federal Budget. Just saying.
May 7, 2025 at 3:03 PM
Climate Change archives…

In 2005, I served on Pres. Bush's NSF panel to recommend who he'd award the National Medal of Science. One winner was Lonnie Thompson. Studied ice cores from tropical mountain glaciers, revealing forces of climate variability on Earth, past & present.
May 6, 2025 at 7:14 PM
Weather and climate research funds are being “chainsawed” from NOAA's budget. Last I checked, Louisiana & Florida, which are maximally susceptible to Hurricanes, voted Red in the last General Election.

Wondering if residents there knew in advance this would happen.
May 6, 2025 at 11:19 AM
In space, Venus flanks Earth on the left, with a hellfire greenhouse effect. Mars on the right, which long ago had running water. Today, it's bone dry. Something bad happened on each planet.

Seems like the wrong time to limit the Nation’s capacity to conduct climate research.
May 5, 2025 at 7:25 PM
The plots of disaster movies that portray the end of civilization often begin with high-level Government Officials ignoring the warnings of Scientists.

One of several lesson learned from the 2.5 hour @Netflix Documentary — Don’t Look Up (2021).
May 4, 2025 at 1:15 PM
May 2, 2025 at 7:16 PM
While visiting Meteor Crater, I couldn’t resist the occasion — 20 miles away as the Eagle flies — to take it easy, and to be a-standin’ on the corner in Winslow, Arizona.
May 2, 2025 at 3:16 PM
Visited Meteor Crater a few years ago. Best preserved in the world. Crafted some 50,000 years ago by a 50-yard meteor moving 10 miles/sec.

Can sink a 60-story building. Reminder that Earth orbits the Sun in a shooting gallery.

Luckily, the crater rim juuuuust missed the visitor's center!
May 2, 2025 at 1:24 PM